There is no audio from the digital video recorder when using an HDMI connection to a television.

IMPORTANT:If model-specific information is required to complete the steps in this solution, refer to the operating instructions supplied with the product.
Manuals are posted on your model support page.

It is possible your TV does not accept Dolby Digital® signals through an HDMI® connection. If the Audio option in the Digital Video Recorder is set to Dolby Digital: Auto On and your TV does not support Dolby Digital sound through HDMI, then no audio will be heard from channels broadcast with Dolby Digital sound using this connection. To receive sound, change the Audio option to Dolby Digital: Off.